Issued Patents 1982
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4356290 | Block polymers of polyphenylene oxide and aromatic polyformals | — | 1982-10-26 |
| 4340696 | Formal-coupled polyphenylene oxides | George R. Loucks | 1982-07-20 |
| 4334050 | Arene polysulfonyl halide coupled block polymers of polyphenylene oxide and aromatic polyformals | — | 1982-06-08 |
| 4330666 | Method for making polyetherimides | David G. Keyes | 1982-05-18 |
| 4324883 | Method for making polyetherimide using a phenolic or carboxylic acid catalyst | David G. Keyes | 1982-04-13 |
| 4324885 | Quaternary Group VA salt catalyzed method for making polyetherimide | David G. Keyes | 1982-04-13 |
| 4324884 | Organic amine catalyzed method for making polyetherimide | David G. Keyes | 1982-04-13 |